Results 41 to 50 of about 409,060 (363)

Operational Band-to-Band Correction and Attitude Refinement of Pelican-2: Dual-Panchromatic Attitude Restitution and Selective Bundle Adjustment with Preliminary Application to Earthquake Displacement and DEM Generation [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The Pelican satellite constellation, first launched by Planet Labs in 2025, continues the high-resolution imaging capability established by the SkySat program.
S. Aati   +7 more
doaj   +1 more source

Astrape: A System for Mapping Severe Abiotic Forest Disturbances Using High Spatial Resolution Satellite Imagery and Unsupervised Classification

open access: yesRemote Sensing, 2021
Severe forest disturbance events are becoming more common due to climate change and many forest managers rely heavily upon airborne surveys to map damage.
Sarah A. Wegmueller, Philip A. Townsend
doaj   +1 more source

Growth model interpretation of planet size distribution [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2018
Significance The discovery of numerous exoplanet systems containing diverse populations of planets orbiting very close to their host stars challenges the planet formation theories based on the solar system. Here, we focus on the planets with radii of 2–4
L. Zeng   +15 more
semanticscholar   +1 more source

The PLANET Collaboration [PDF]

open access: yesSymposium - International Astronomical Union, 1996
A newly-formed microlensing monitoring network, the PLANET collaboration, is briefly described.
M. Albrow   +11 more
openaire   +1 more source

Spatial-temporal change of the geomagnetic field: environmental aspect

open access: yesГеофизический журнал, 2020
The geomagnetic field, along with other environmental factors, is a necessary component of life on the Earth. Currently, there are relevant ecological standards for the values of constant and variable fields.
M.I. Orlyuk, A.A. Romenets
doaj   +1 more source

Applicability study of four atmospheric correction methods in the remote sensing of lake water color

open access: yesGeocarto International, 2023
Due to the complexity of spectral characteristics for inland lake water, high-precision atmospheric correction methods play an essential role in remote sensing.
Aimin Li, Xiangyu Yan, Xuan Kang
doaj   +1 more source

PLANETS ON THE EDGE [PDF]

open access: yesThe Astrophysical Journal, 2014
Hot Jupiters formed through circularization of high-eccentricity orbits should be found at orbital separations $a$ exceeding $twice$ that of their Roche limit $a_{\rm R}$. Nevertheless, about a dozen giant planets have now been found well within this limit ($a_{\rm R}
Francesca Valsecchi, Frederic A. Rasio
openaire   +2 more sources

The Disk Substructures at High Angular Resolution Project (DSHARP). VII. The Planet–Disk Interactions Interpretation [PDF]

open access: yesAstrophysical Journal, 2018
The Disk Substructures at High Angular Resolution Project (DSHARP) provides a large sample of protoplanetary disks with substructures that could be induced by young forming planets.
Shangjia Zhang   +14 more
semanticscholar   +1 more source

Migrating Planets [PDF]

open access: yesScience, 1998
A planet orbiting in a disk of planetesimals can experience an instability in which it migrates to smaller orbital radii. Resonant interactions between the planet and planetesimals remove angular momentum from the planetesimals, increasing their eccentricities.
Murray, Norm   +3 more
openaire   +3 more sources

Analysis of PlanetScope Dove Digital Surface Model Accuracy Using Geometrically Simulated Images

open access: yesRemote Sensing, 2023
Many objectives in geoscience and engineering require Earth surface elevations at greater temporospatial resolution and coverage than are currently available.
Myoung-Jong Noh, Ian M. Howat
doaj   +1 more source

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